When two passenger ships collide off Nantucket in 1909, 1,500 people rely on 26-year-old Jack Binns to operate a new technology - wireless telegraphy - to save them all.
Engineer James Eads tamed the mighty Mississippi, turning New Orleans into the second largest port in the nation.
The grave truth behind modern forensics was discovered in 1920s New York.
The story behind the development of the oral contraceptive that put women in control of birth control.
The Alaskan Highway stands today as one of the boldest homeland security initiatives ever undertaken.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.